/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.jena.assembler.test;

import java.util.*;

import org.apache.jena.assembler.*;
import org.apache.jena.assembler.assemblers.RuleSetAssembler;
import org.apache.jena.rdf.model.*;
import org.apache.jena.reasoner.rulesys.Rule;

public class TestRuleSetAssembler extends AssemblerTestBase {
    public TestRuleSetAssembler(String name) {
        super(name);
    }

    @Override
    protected Class<? extends Assembler> getAssemblerClass() {
        return RuleSetAssembler.class;
    }

    public void testRuleSetVocabulary() {
        assertSubclassOf(JA.RuleSet, JA.HasRules);
        assertDomain(JA.HasRules, JA.rule);
        assertDomain(JA.HasRules, JA.rulesFrom);
        assertDomain(JA.HasRules, JA.rules);
        assertRange(JA.RuleSet, JA.rules);
    }

    public void testRuleSetAssemblerType() {
        testDemandsMinimalType(new RuleSetAssembler(), JA.RuleSet);
    }

    public void testEmptyRuleSet() {
        Assembler a = new RuleSetAssembler();
        Resource root = resourceInModel("x rdf:type ja:RuleSet");
        assertEquals(RuleSet.empty, a.open(root));
    }

    public void testSingleRuleString() {
        Assembler a = new RuleSetAssembler();
        String ruleString = "[(?a P ?b) -> (?a Q ?b)]";
        Resource root = resourceInModel("x rdf:type ja:RuleSet; x ja:rule '" + ruleString.replaceAll(" ", "\\\\s") + "'");
        RuleSet rules = (RuleSet)a.open(root);
        Set<Rule> expected = new HashSet<>(Rule.parseRules(ruleString));
        assertEquals(expected, new HashSet<>(rules.getRules()));
    }

    public void testMultipleRuleStrings() {
        Assembler a = new RuleSetAssembler();
        String ruleStringA = "[(?a P ?b) -> (?a Q ?b)]";
        String ruleStringB = "[(?a R ?b) -> (?a S ?b)]";
        Resource root = resourceInModel("x rdf:type ja:RuleSet" + "; x ja:rule '" + ruleStringA.replaceAll(" ", "\\\\s") + "'"
                                        + "; x ja:rule '" + ruleStringB.replaceAll(" ", "\\\\s") + "'");
        RuleSet rules = (RuleSet)a.open(root);
        Set<Rule> expected = new HashSet<>(Rule.parseRules(ruleStringA));
        expected.addAll(Rule.parseRules(ruleStringB));
        assertEquals(expected, new HashSet<>(rules.getRules()));
    }

    public void testRulesFrom() {
        Assembler a = new RuleSetAssembler();
        String rulesA = file("example.rules");
        Resource root = resourceInModel("x rdf:type ja:RuleSet; x ja:rulesFrom " + rulesA);
        Set<Rule> expected = new HashSet<>(Rule.rulesFromURL(rulesA));
        RuleSet rules = (RuleSet)a.open(root);
        assertEquals(expected, new HashSet<>(rules.getRules()));
    }

    public void testSubRules() {
        Assembler a = new RuleSetAssembler();
        String ruleStringA = "[(?a P ?b) -> (?a Q ?b)]";
        Resource root = resourceInModel("x rdf:type ja:RuleSet; x ja:rules y" + "; y rdf:type ja:RuleSet; y ja:rule '"
                                        + ruleStringA.replaceAll(" ", "\\\\s") + "'");
        Set<Rule> expected = new HashSet<>(Rule.parseRules(ruleStringA));
        RuleSet rules = (RuleSet)a.open(root);
        assertEquals(expected, new HashSet<>(rules.getRules()));
    }

    public void testTrapsBadRulesObject() {
        testTrapsBadRuleObject("ja:rules", "'y'");
        testTrapsBadRuleObject("ja:rulesFrom", "17");
        testTrapsBadRuleObject("ja:rule", "aResource");
        testTrapsBadRuleObject("ja:rule", "17");
        testTrapsBadRuleObject("ja:rule", "'something'xsd:else");
    }

    private void testTrapsBadRuleObject(String property, String value) {
        Assembler a = new RuleSetAssembler();
        Resource root = resourceInModel("x rdf:type ja:RuleSet; x <property> <value>".replaceAll("<property>", property)
                                                                                     .replaceAll("<value>", value));
        try {
            a.open(root);
            fail("should trap bad rules object " + value + " for property " + property);
        } catch (BadObjectException e) {
            Model m = e.getRoot().getModel();
            assertEquals(resource("x"), e.getRoot());
            assertEquals(rdfNode(m, value), e.getObject());
        }
    }

    protected static String file(String name) {
        return "file:testing/modelspecs/" + name;
    }
}
